Quick Answer

HPV is the only STD directly linked to cancer: cervical, anal, oropharyngeal, penile, vaginal, and vulvar cancers. Hepatitis B and C cause liver cancer through chronic inflammation. Syphilis and HIV do not cause cancer directly but are associated with higher cancer rates.

  • HPV: causes 95% of cervical cancers, 70% of oropharyngeal cancers, 90% of anal cancers.
  • Hepatitis B: chronic carriers have 15-25% lifetime risk of liver cancer.
  • Hepatitis C: major cause of liver cancer in the U.S. — now curable with DAAs, reducing cancer risk.
  • Cervical cancer screening: Pap smears detect precancerous changes before they become cancer.

Context Most Pages Skip

The cancer link is the strongest argument for STI prevention and screening. HPV vaccination at age 11-12 prevents 90% of HPV-related cancers.

Getting screened

Cervical screening (Pap + HPV cotest) every 5 years ages 30-65. Anal cancer screening for at-risk groups (MSM, HIV-positive). Hepatitis B/C: blood test once if at risk.

⚕️ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested — most infections are manageable, and many are fully curable.

Sources & Further Reading

Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.